set is specifically sourced by the staff at Wunderlich America for its
quality and reliability and used extensively by our in-house shop. Each
size tap come with three pieces: pilot tap, medium tap, and refining
tap. This eliminates the need for tapping-in and backing-out
repetitively to produce your threads. You can run the initial tap to
lightly thread the opening, the next will create the deeper grooves, and
the final tap will refine the threads for a flawless end product.
A great addition to any mechanic's workshop. This is a complete thread cutting tool set, with 22 pieces housed in a study metal box. The 22 pieces included an adjustable wrench to work with the high strength steel Hand Tap Set from M3 to M12.